Zacapa rums XO is aged in a combination of bourbon, delicate sherry and Pedro Ximenez wine casks to create a unique depth of flavor and character. After three years the used barrels are emptied and then recharred while the contents are married with other rums in the first part of the Zacapa solera system. Scraping and recharring the used barrels give the rum a sweeter flavor from the newly charred wood.